Printing mechanism



March 7, 1939.

J. M. TRINER PRINTING MECHANISM Filed March 2'7, 1936 2 Sheets-Sheet lMININ7 frzuerzzr kfa/izas [1.7 Z1726? Mal-c117, 1939. J M TRlNER2,149,478 PRINTING MECHANISM Filed March 27, 1936 2 SheetsSheet 2Patented Mar. 7, 1939 UNITED STATES PATENT OFFICE 2,149,478 PRINTINGMacnANrsM Application March 27, 1936, Serial No. 71,154

Claims.

The present invention relates to means for printing and pertains moreespecially, but not necessarily restrictedly, to improved and novelmeans for printing the weight of a body or load 5 resting on theplatform of a weighing scale, as, for example, by means of raised ortype figures on a rotary dial or disc graduated on its other side tovisually display the amount of weight of such load or body.

in A leading object or purpose of the invention is to provide aconstruction of this general character which may be operated withfacility, which is simple in structure and therefore relativelyinexpensive to manufacture, which is reliable in 1.1 action, whichperforms its functions in a wholly satisfactory and gratifying manner,and which is susceptible of easy adjustment.

To the accomplishment of these and other desirable aims a presentpreferred embodiment of the invention has been devised and illustratedin the accompanying drawings forming a part of this specification andthroughout the several views of which like reference numerals have beenemployed to'designate the same parts.

.--, In these drawings:-

Figure 1 is a vertical section through a portion of a weighing scaleshowing the new printing mechanism in association with the graduatedwheel or disc operated by the load on the scale platform (not shown) toturn on its axis an amount proportional to the.weight of the load;

Figure 2 is a horizontal section on line 2-2 of Figure l the parts beingviewed looking downwardly;

Figure 3 is a similar horizontal section illustrating some of theelements of the appliance in different positions preliminary to theprinting operation;

Figure 4 is a vertical, longitudinal section on the broken line 44 ofFigure 2, the parts being viewed in the direction indicated by arrows;

Figure 5 illustrates the several mechanical elements in the positionswhich they occupy during the printing operation;

. Figure 6 is a section on line 6-3 of Figure 3 and presents the typewheel gripping or anchoring mechanism in detail; and

Figure 7 is an enlarged, sectional, detail view through the rubberprinting-roller whose travel results in effecting the performance of theprinting operation.

Referring to the views of the drawings, it will be noted that a wall ii,ordinarily the back wall, of the weighing scale casing is provided withan 5 opening or slot i2 (Fig. l) communicating with a thin card or paperholding and guiding housing l3 closed at its lower end at i4 againstwhich the bottom edge of the card or paper may rest when being printed,the opposite, thin, sheet-metal walls of such guide or housing i3 beingapertured 5 in register at l5 and ii.

The card or paper il (Fig. 7), whichever is used, is covered with acarbon paper sheet (not shown) on one side, by means of which theprinting is accomplished in much the same way 10 that carbon copies aremade in a typewriter.

On an adjacent wall iii of the scale housing, or in any other approvedmanner, a hollow casting, designated as a whole i3, is mounted (Fig. 2)inside of such housing, this member is having 1.1 parallel side-walls2i, 22 and a connecting endwall 23 provided with parallel, verticalslots 24, 25.

An actuating lever-handle 26 is fulcrumed at 21 on the exterior of suchwall i8, so that the handle is readily accessible for manipulation, the90 upper end of such lever being slotted at 28 (Fig. 6) for theaccommodation of a cross-pin 29 (Figs. 2 and 6), one end ll of which isfixed to a. slide 32 reciprocatory through slot 25, the opposite end 33of the pin extending through a longitudinal slot 34 in a companion slide35 working through the other slot 24, the cross-pin conveniently havingspacing-spools 38, 36 between the faces of the lever-handle 26 and theinner surfaces of the complementary slides 32 and 35, the pin also atits an opposite ends having screws 31, 31 and associated washers 38, 33to connect the parts together properly.

From what precedes, it will be clear that when the operator pulls thelower end of the handle 35 23outwardly or away from the casing, itsupper end moves inwardly and first shifts the slide 32 inwardly andlater carries the other slide 35 in the same direction due to the looseconnection 33, 34 with such-second slide.

As will be explained hereinafter, the first of such movements occasionsthe looking or clamping of the printing-wheel against turning and otherdisplacement and the second of the specified movements performs theprinting operation.

Slide 32 is connected to a larger slide 33 controlled in its line oftravel by guides 4 I, 4| (Fig. 6) by means of a lengthwise slot 42 inpart 32 and a screw 43 (Fig. 2) mounted on slide 33 and occupying suchslot, such larger slide 39 being pulled inwardly of the casing by acoiled, contractile spring 44 connected to a pin 45 on the slide and toa correlated pin or stud 43 on the stationary part 22.

This slide 33 carries a clamp or anchor 41 for the rotary weighing-wheelor graduated-ring d8 of the scale which has raised type figures or leg=ends #39 on its rear face corresponding to the weights of the loads onthe scale platform, the various correct type figures being brought toprinting position, so that the printed card or paper will display alegend showing the amount of weight of any particular load undergoingthe scale-weighing operation.

Although not shown in the drawings, the front face of such indicatingwheel or disc at displays similar weight=legends which are visibleindividu= ally to the operator so that he can see the correct weight byviewing the single legend displayed.

Part 6? comprises two sections, the one section 5i having aslightly-bevelled or wedge-shaped face to engage the surface of thewheel :38 oppo site the type numerals t9, the other section com= prisinga flange 52 adapted to engage and bear against the edge of the wheel Theinoperative position of all or these mechanical elements is indicated inFigure 2, their operative relationship being presented in Figures 3 and5.

The companion slide 35 is directed in its reciprocatory movements bystationary guide-bars 53, 53 (Fig. 4) and the slide is pushed outwardlyby a coiled spring 59 encircling a rod 55 and pressing at its oppositeends against a stud 56 on the slide and against an abutment all on thestationary part 2 l.

Slide as inside of the casing has a, bent or cam bar 58 rockinglymounted or fulcrumed thereon at 59 for slight movement in a horizontalplane, one end of such bar having ears 5i carrying a revoiuble,rubber-faced roller 52 located in alignment with the registeringapertures i5 and it of the card or paper receiving housing [73.

This roller-equipped end of bar or lever 53 is normally held retractedin a slot in slide 35 and against the adjacent face of part 2i by acoiled spring ti acting on the opposite end or the rulcrumed bar, suchspring being interposed be tween the bar and the slide,

A bracket 65 mounted on the element 2i and extended outwardly through anopening in the casing-wall ii is fitted with a screw=threaded passageaccommodating a hollow adjustment= screw t6 having a knurled head 5i bymeans of which it may be turned, the bore oi the screw slidinglyreceiving the cylindrical stern of a bracket 58 carrying a revolublepressure-=roller 8d cooperatingwith a cam portion ii of lever 53, aspring l2 interposed between the bracket 68 and the end of the screw t6and surrounding the stem of such bracket tending to force the bracketand its roller inwardly toward the scale printing wheel as.

Bracket 6% extends through and is guided in its movements by the wallsof an opening it? in ele= ment hi, the innermost part of the bracket ex=tending through slot 63 so that its roller 5Q may coact with theinclined and adjacent parts of the lever 58.

The operation of this novel printing-rnechanism occurs practically asfellowsh- When the rotary weight=indicating wheel 68 has come to restafter the load to be weighed has been deposited on the scale-platform,the type numeral 59 corresponding to such weight will be in correctprinting position in that part of the mechanism shown in the drawings.

The operator thereupon grasps the lower han= dle portion of lever as andpulls it outwardly, thus causing its upper end to travel inwar wherebyarts are

the compound or duplex slide 822-318 at once moves inwardly under thepulling action of its spring it, and during such operation thewedgeclamp 5i engages the front face of the indicating-wheel t8 andbraces and holds it against movement, but such inward travel of slide 2tand its clamp or anchor 3? is terminated when the flange or stop 52strikes the edge of the wheel (Figs. 3 and 5).

Owing, however, to the loose slot-and-screw connection d2, d3 betwenthese two slides, the part 32 may continue and complete its inwardstroke as presented in Figure 5n Due to the play between lever 2t andthe other slide 35 by reason of the pin end 33 being mova-= his in theslot M, such slide does not begin its inward stroke until about the timethe indicating= wheel has been locked in place as just described andduring such travel against the counter-pressing action of spring 5 3 theprinting-roller lever 58 necessarily goes with it, and the inclined orsloping part ll of lever '58 moves in due to its engagement with thepressure-roller 69, the spring 12 of the latter thereupon imposing itspressure on the printing-roller 62 and its lever 58 causing such rollerto engage the card or paper in the guiding and positioning casing i3,whereby the roller rolls over the portion of the card or paper exposedthrough the opening it and presses it against the closely adjacenttype-legend as on the now locked indicating-wheel (it, thus efiect= ingthe printing of the proper weight legend on the card or paper throughits carbon paper (not shown) overlying its face.

The printing operation having been thus consummated, the handle 26 isswung in the opposite direction to return the various cooperating ele=-ments of the mechanism to their original positions, this action beingaided by the expansion of spring 5 3.

If the card or paper is left in place during both strokes of theprinting-roller 62, the printing op= eration will occur twice through adouble irn= pression The card or paper having been thus printed, it isremoved through the entrance or mouth 82 and it will have had printed onit the correct weight of the load imposed on the platform of the scale.

From the foregoing it will be apparent that the combined indicating andprinting wheel or disc d8 is held firmly in position during the printingaction both against rotation and against bach= ing away from theimpression roller.

Those acquainted with this art will readily understand thatgtheinvention as herein set forth is susceptible of a variety or embodimentsand is not necessarily limited to the particular one shown and describedand that various mechanical mod= ifications may be resorted to withoutdeparture from the heart and essence of the invention as defined by theappended claims and without the loss or sacrifice of any of itssubstantial or ma= terial benefits and advantages.

I claim:

1. In a printing-mechanism, the combination of a rotary wheel carrying aseries of type-legends on a. side face thereof adapted by its movementsto bring said legends individually into a printing position, slidablemeans having a bevelled surface to engage the side face of said wheelopposite that bearing said legends to hold and to support the wheelclamped against movement during the printing action, means to guide theelement to be printed into position with relation to the type-legend ofsaid wheel which is in printing position, means to press said elementand said type-legend against one another to affect the printingoperation, and means common to said holding-means and pressing-means toslide said holding-means to clamp said wheel against movement and thento actuate said pressing-means to effect the printing action.

2. In a printing-mechanism, the combination of a rotary wheel carrying aseries of type-legends on a side face thereof adapted by its movementsto bring said legends individually into a printing position, meanshaving a bevelled surface to engage the face of said wheel opposite thatbearing said legends and a surface to engage the edge of said wheel tohold the wheel clamped against movement during the printing action,means to guide the element to be printed into position with relation tothe type-legend of said wheel which is in printing position, means topress said element and said type-legend against one another to effectthe printing operation, and means common to said holding-means and saidpressing-means to actuate said holding-means to clamp said wheel againstmovement and then to actuate said pressing-means to effect the printingaction. Y

3. In a printing-mechanism, the combination of a rotary wheel carrying aseries of typelegends on a side face thereof adapted by its movements tobring said legends individually into a printing position, means toengage the face of said wheel opposite that bearing said legends to holdthe wheel clamped against movement during the printing action, means toguide the element to be printed into position with relation to thetype-legend of said wheel which is in printing position, a roller, meansto roll said roller on said element to press said element and saidtypelegend against one another to effect the printing operation, andmeans conmion to said holding-means and said rolling means to actuatesaid holding-means to clamp the wheel against movement and. thereafterto actuate said rolling means to effect the printing action.

4. In a printing-mechanism, the combination of a rotary wheel carrying aseries of typelegends on a side face thereof adapted by its movements tobring said legends individually into a printing position, meansincluding a loose-motion spring-pressed slide construction to engage theface of said wheel opposite that hearing said legends to hold the wheelclamped against movement during the printing action, means to guide theelement to be printed into position with relation to the type-legend ofsaid wheel which is in printing position, means including a loose-motionspring-pressed slide construction to press said element and saidtype-legend against one another to effect the printing operation, andmeans common to said holding-means and said pressing-means to actuatesaid holding-means to clamp said wheel against movement and thereafterto actuate said pressing-means to effect the printing action.

5. In a printing-mechanism, the combination of a rotary wheel carrying aseries of typelegends on a side face thereof adapted by its movements tobring said legends individually into a printing position, means having abevelled surface to engage the face of said wheel opposite that bearingsaid legends and a surface to engage the edge of said wheel to hold thewheel clamped against movement during the printing action, saidholding-means including a loose-motion spring-pressed slideconstruction, means to JALEESM.TRINER.

